312213120232 has 32 divisors (see below), whose sum is σ = 645806697480. Its totient is φ = 140583767040.

The previous prime is 312213120187. The next prime is 312213120257. The reversal of 312213120232 is 232021312213.

It can be written as a sum of positive squares in 4 ways, for example, as 29982307716 + 282230812516 = 173154^2 + 531254^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36606093 + ... + 36614620.

Almost surely, 2^312213120232 is an apocalyptic number.

It is an amenable number.

312213120232 is an abundant number, since it is smaller than the sum of its proper divisors (333593577248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312213120232 is a wasteful number, since it uses less digits than its factorization.

312213120232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73220773 (or 73220769 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 312213120232 its reverse (232021312213), we get a palindrome (544234432445).

The spelling of 312213120232 in words is "three hundred twelve billion, two hundred thirteen million, one hundred twenty thousand, two hundred thirty-two".